RSC  0.17.1
Win32SignalWaiter.cpp
Go to the documentation of this file.
1 /* ============================================================
2  *
3  * This file is part of the RSC project
4  *
5  * Copyright (C) 2014 Jan Moringen <jmoringe@techfak.uni-bielefeld.de>
6  *
7  * This file may be licensed under the terms of the
8  * GNU Lesser General Public License Version 3 (the ``LGPL''),
9  * or (at your option) any later version.
10  *
11  * Software distributed under the License is distributed
12  * on an ``AS IS'' basis, WITHOUT WARRANTY OF ANY KIND, either
13  * express or implied. See the LGPL for the specific language
14  * governing rights and limitations.
15  *
16  * You should have received a copy of the LGPL along with this
17  * program. If not, go to http://www.gnu.org/licenses/lgpl.html
18  * or write to the Free Software Foundation, Inc.,
19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20  *
21  * The development of this software was supported by:
22  * CoR-Lab, Research Institute for Cognition and Robotics
23  * Bielefeld University
24  *
25  * ============================================================ */
26 
27 #include "SignalWaiter.h"
28 
29 #include <Windows.h>
30 
31 #include <stdexcept>
32 
33 #include <iostream>
34 
35 namespace rsc {
36 namespace misc {
37 
38 int requestedSignals = 0;
39 
40 void initSignalWaiter(int signals) {
41  // SIGNALS should specify one or more signals.
43  & signals) == 0) {
44  throw std::logic_error("At least one signal has to be specified.");
45  }
46 
47  requestedSignals = signals;
48 }
49 
51  if (requestedSignals == 0) {
52  throw std::logic_error("initSignalWaiter has to be called before"
53  " waitForSignal.");
54  }
55 
56  std::cerr << "Waiting for termination signals is not implemented for "
57  "this platform. The program will still terminate when "
58  "such a signal is received but without shutting down "
59  "properly."
60  << std::endl;
61  Sleep(INFINITE);
62  return INTERRUPT_REQUESTED; // should be unreachable
63 }
64 
66  if (requestedSignals == 0) {
67  throw std::logic_error("initSignalWaiter has to be called before"
68  " hasSignalArrived.");
69  }
70 
71  return NO_SIGNAL;
72 }
73 
74 
75 int suggestedExitCode(Signal signal) {
76  switch (signal) {
78  return 1;
80  return 1;
81  case QUIT_REQUESTED:
82  return 1;
83  case NO_SIGNAL:
84  default:
85  throw std::logic_error("Invalid signal number");
86  }
87 }
88 
89 }
90 }
void initSignalWaiter(int signals)
Prepare waiting for signals.
Signal waitForSignal()
Block until one of the signals specified in initSignalWaiter arrives, then return the signal...
Signal
Signals waitForSignal can wait for.
Definition: SignalWaiter.h:44
Artificial enum entry to indicate that no signal is meant at all.
Definition: SignalWaiter.h:49
Signal lastArrivedSignal()
Returns the last signal that has arrived at this process or Signal::NO_SIGNAL in case no signal arriv...
Interrupting the program has be requested.
Definition: SignalWaiter.h:56
int suggestedExitCode(Signal signal)
Return suggested exit code for exiting the program after receiving signal signal. ...
Quitting the program has be requested.
Definition: SignalWaiter.h:70
Terminating the program has be requested.
Definition: SignalWaiter.h:63